Abstract A proposal of a 2.4 GHz rectenna is presented as a complementary device for the electrical power system (EPS) in CubeSats, with the goal of maintaining its size regulations and providing an extra voltage input to the existing methods, like solar cells and batteries, thus possibly increasing the CubeSat’s durability. The antenna design was done in CST STUDIO SUITE, adjusting different parameters that optimize its performance. There is also an analysis of the rectenna elements, and the equations needed to do it. For the rectifier section of the rectenna, the software ADVANCED DESIGN SYSTEM (ADS) was used, using a band-pass filter and a 3-stage Dickson voltage amplifier. These elements are essential to ensure an optimal and efficient performance of the rectenna that provides an extra voltage source for the subsystems of a nanosatellite.